SYNTHESIS AND CHARACTERIZATION OF POLYMERS RENEWABLE OBTAINED FROM EPOXIDIZED LINSEED OIL USING POLYTHIOLS AS CROSS-CROSSING AGENTS

• Grant number: 24/02562-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: April 01, 2024
• End date: December 31, 2024
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Gilbert Bannach
• Grantee: Fernanda Barreto dos Santos
• Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

The society is in constantly developing, as consequence, a large quantity of polymeric materials haves been produced. This is due to the broad scope and diversity of applications for these materials. However, most of these materials are derived from non-renewable sources such as petroleum, which causes significant environmental impact. Thus, the search for polymers from renewable raw materials and products that are environmentally friendly has been encouraged. In this context, the use of vegetable oils combined with polyols that tend to produce renewable polymers with self-healing capabilities, known as vitrimers. This combined with alternative synthetic routes following the principles of Green Chemistry, becomes a promising alternative. Therefore, this present work aims to produce renewable polymers through the reaction between a monomer and various polithiols using an epoxy-thiol reaction. The curing of these mixtures will be carried out in two distinct and independent ways: through thermal and photopolymerization routes. In both cases, optimizations will be performed to find more efficient and environmentally friendly synthetic routes. The final polymeric materials, as well as the raw materials used will be characterized by titrimetric methods and techniques such as Simultaneous Thermogravimetry-Differential Thermal Analysis (TG-DTA), Differential Scanning Calorimetry (DSC), Mid-Infrared Vibrational Absorption Spectroscopy (MIR), Dynamic Mechanical Analysis (DMA), and Scanning Electron Microscopy (SEM). Therefore, applications will be determined for the obtained materials, such as photocurable monomers for 3D printers.